package com.ly.hotel.webagent;

import android.util.Log;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.io.PrintWriter;
import java.net.HttpURLConnection;
import java.net.URL;
import java.net.URLConnection;
import java.util.List;
import java.util.Map;


public class HttpRequest {
    /**
     * 向指定URL发送GET方法的请求
     * 
     * @param url
     *            发送请求的URL
     * @param param
     *            请求参数，请求参数应该是 name1=value1&name2=value2 的形式。
     * @return URL 所代表远程资源的响应结果
     */
    public static String sendGet(String url, String param) {
        String result = "";
        BufferedReader in = null;
        try {
        	String urlNameString;
        	if(param != null){
        		urlNameString = url + "?" + param;
        	}else{
        		urlNameString = url;
        	}
            URL realUrl = new URL(urlNameString);
            // 打开和URL之间的连接
            URLConnection connection = realUrl.openConnection(); 
            // 设置通用的请求属性
            connection.setRequestProperty("accept", "*/*");
            connection.setRequestProperty("connection", "close");
            connection.setRequestProperty("user-agent", "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1;SV1)");
            // 建立实际的连接
            connection.connect();
            // 获取所有响应头字段
            Map<String, List<String>> map = connection.getHeaderFields();
            // 遍历所有的响应头字段
/*            for (String key : map.keySet()) {
                System.out.println(key + "--->" + map.get(key));
            }*/
            // 定义 BufferedReader输入流来读取URL的响应
            in = new BufferedReader(new InputStreamReader(
                    connection.getInputStream()));
            String line;
            while ((line = in.readLine()) != null) {
                result += line;
            }
        } catch (Exception e) {
            System.out.println("发送GET请求出现异常！" + e);
            return "ERROR";
        }
        // 使用finally块来关闭输入流
        finally {
            try {
                if (in != null) {
                    in.close();
                }
            } catch (Exception e2) {
                e2.printStackTrace();
            }
        }
        return result;
    }

    /**
     * 向指定 URL 发送POST方法的请求
     * 
     * @param url
     *            发送请求的 URL
     * @param param
     *            请求参数，请求参数应该是 name1=value1&name2=value2 的形式。
     * @return 所代表远程资源的响应结果
     */
    public static String sendPost(String url, String param) {
        PrintWriter out = null;
        BufferedReader in = null;
        String result = "";
        try {
            URL realUrl = new URL(url);
            // 打开和URL之间的连接
            URLConnection conn = realUrl.openConnection();
            // 设置通用的请求属性
            conn.setRequestProperty("accept", "*/*");
            conn.setRequestProperty("connection", "close");
            conn.setRequestProperty("user-agent", "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1;SV1)");
            // 发送POST请求必须设置如下两行
            conn.setDoOutput(true);
            conn.setDoInput(true);
            // 获取URLConnection对象对应的输出流
            out = new PrintWriter(conn.getOutputStream());
            // 发送请求参数
            out.print(param);
            // flush输出流的缓冲
            out.flush();
            // 定义BufferedReader输入流来读取URL的响应
            in = new BufferedReader(
                    new InputStreamReader(conn.getInputStream()));
            String line;
            while ((line = in.readLine()) != null) {
                result += line;
            }
        } catch (Exception e) {
            return "ERROR";
        }
        //使用finally块来关闭输出流、输入流
        finally{
            try{
                if(out!=null){
                    out.close();
                }
                if(in!=null){
                    in.close();
                }
            } catch(IOException ex){
                ex.printStackTrace();
            }
        }
        return result;
    }

    //XML格式POST请求
    public static String sendPostXML(String url, String param){
        String result = "";
        BufferedReader reader = null;
        OutputStream out = null;
        InputStream is = null;
        InputStreamReader isr = null;
        // HttpURLConnection 发送SOAP请求
        try {

            //创建服务器地址
            URL realUrl = new URL(url);
            //打开一个通向服务地址的连接
            HttpURLConnection conn = (HttpURLConnection) realUrl.openConnection();
            //设置参数
            //发送方式设置，POST必须要大写
            conn.setRequestMethod("POST");
            //设置数据格式 Content-Type
            conn.setRequestProperty("Content-Type", "text/xml;charset=utf-8");
            //设置数据长度 Content-Length
            conn.setRequestProperty("Content-Length", String.valueOf(param.getBytes().length));
            // 设置通用的请求属性
            conn.setRequestProperty("accept", "*/*");
            conn.setRequestProperty("connection", "close");
            conn.setRequestProperty("user-agent", "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1;SV1)");
            conn.setUseCaches(false);
            //设置输入输出，因为新创建的conn是没有读写权限的
            conn.setDoInput(true);
            conn.setDoOutput(true);
            //设置超时时间
            //连接超时
            conn.setConnectTimeout(10000);
            //读取超时
            conn.setReadTimeout(10000);

            //发送请求
            out = conn.getOutputStream();
            out.write(param.getBytes());
            //打印ResponseCode  200/成功
            if (200 != (conn.getResponseCode())){
                Log.e("httpGet", "HTTP Request is not success, Response code is " + conn.getResponseCode());
            }

            //获取http响应数据
            is = conn.getInputStream();

            isr = new InputStreamReader(is);
            reader = new BufferedReader(isr);
            String line = null;
            while ((line = reader.readLine()) != null) {
                result += line;
            }
        } catch (Exception e) {
            return "ERROR";
        }
        //关闭流
        finally {
            try {
                //关闭输出流
                if (out != null){
                    out.close();
                }
                //关闭输入流
                if (reader != null){
                    reader.close();
                }
                if (is != null){
                    is.close();
                }
                if (isr != null){
                    isr.close();
                }
            } catch (IOException e) {
                e.printStackTrace();
            }
            
        }

        return result;
    }
}